US2692003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming metal strips of curved cross-sections
Assignee: Bethlehem Steel Corp
•
Filing: 1951-11-07
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Granted: 1954-10-19
•
Expires: 1971-11-07
Abstract
No abstract record available.
Inventors
- 👤 Henry W Nieman
- 👤 George O Maish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:48
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/74
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |